Boeing’s long-haul interception radar-platform is based on the civilian Boeing 707-300C of 1961. This airplane, equipped with the latest electronics, was for the first time capable of completely monitoring a surveillance area with radar, finally preventing opposing forces being able to operate undetected at low level flights. The USAF operates 33 machines, among them the original of this model with the registration 71-1407 of the “552nd Air Control Wing” based at the Tinker Air Force Base, Oklahoma.